Dropping bottle



Aug. 10,1937. E. BOHM DRO-PPING BOTTLE Filed July 27, 1955 2 Sheets-Sheet l nvws/vrcm gen BJ/zm. Q12: wm M A TTOR/VEJG Aug. 10, 1937. O M

- DROPPING BOTTLE 2 Sheets-Sheet 2 Filed July 2'7, 1935 Flt-5.0

' v INVENTOR I Euygn Edi/ ATTORNEYS Patented Aug. 10, 1937 PATENT OFFICE DBOPP'IN G BOTTLE Eugen B6hm, Ernstthal-on-the-Bennsteig, Germany, assignor to Giashutte Brehmenstall,

Septirnus Bohn Jr., stdg, Germany Ermtthal-on-the-Benn- Application July 27, 1935, Suial No. 33,438%

In Germany A l'Clalms.

This invention relates to dropping bottles and more particularly to dropping bottles of the type in which the capillary tube projecting from the neck of the bottle as well asthe air feeding open- 8 ingarecovered and closed byacap.

Heretoiore the capillary tube, hereafter called the tube. of such droppi g bottles was fitted in the bore-hole of a cork closing the neck of the bottle. The bore-hole as well as the tube were 10 upwardly tapered and thereidre a slight pressure from above easily caused the tube to'drop into the bottle; as the cap was. clamped strongly upon the cork, it often happened that in removingthe captbecorkwiththetubewasalso l5 removed out of the bottle.

My present invention has for its object to improve said type of dropping bottles having a capillary tube and a clodng cap. According to one form of my invention the tube is mounted directly on a cross wall of the neck of the bottle. said neck being constructed as a screw threaded projection carrying the cap. In this embodiment of the invention the tube and the bottle consist of one piece and are closed simultaneously by tlgzscrew cap together with the air feeding open- A further future of my invention is the arrangexnent of a longitudinal slot in said tube and the arrangement oi the airieeding opening im-- mediately next to the mouth of the tube in the screw threaded projection. This construction offers the advantage that the bottle man be pressed or moulded in a very simple and inexpensive pressing mould.

The threaded projection and the tube are preferably inclined in respect to the longitudinal axis of the bottle. This causes the user to hold the bottle in its correct position with downwardly directed tube.

The longitudinal slot of the tube extends preferably on the lower side of the tube and the air feeding opening is arranged below said tube when the bottle is in position for use. This construction has the great advantage that when the bottle is raised after its use. the final remaining drop is sucked up by the slot of the tube and reconducted into the bottle.

According to another embodiment of my in vention the screw thread for the reception of the screw cap is on the lower end of the tube immediately in front of the cross wall of the neck of thebottle. Inthlscasethescrewcaphason its opening a packing surrounding the tube and resting against the cross wall of the neck oi the ssbottle, this packing also tightly sealing the air ugust 7, 1934 opening at the same time. This construction otters the advantage that the space between cap and tube becomes very narrow so that only very little amounts of liquid can accumulate while the cap is screwed upon the bottle. A further ad vantage'of this construction is that no threaded socket projection need to be provided which sometimes hlnders'the-entering oi the air into the bottle so that the dropping becomes irregular.

In order to use my dropping device also for ordinary screw threaded bottles. the cross wall of the neck oi the bottle carrying the tubewith the screw cap can be arranged on an intermediate cap-like piece screwable upon such a bottle.

Another form embodying my invention consists in arranging the tube and the air feeding opening in a tunnel or groove. This construction offers the advantage that the device is well tightened while locked as the inner and upper part of the screwrcap rests firmly upon the upper edge of the funnel. This construction further insures that after use 01 the bottle a drop can not run along the outer wall of the bottle as it is caught by the funnel.

The construction may be eflected in such a way that the tube and the air feeding opening are moulded into the body of the tunnel which means an especially simple and inexpensive manufacture and a very unbreakable arrangement of this kind of device.

It is a further object of my invention to change ordinary bottles not having a dropping device into dropping bottles in so constructing the device of my invention consisting of the funnel into which the tube and the air feeding opening are moulded that it can be screwed upon the screw threaded socket of an ordinary bottle. For this purpose the funnel can be provided with a flange which is pressed by a threaded intermediate piece upon 4 a packing provided between the tunnel and the threaded socket oi the neck of the bottle.

For illustrating the invention several forms oi its embodiment are shown in tze accompanying drawings.

Fig. 1 shows a dropping bottle according to the invention partly in longitudinal cross-section.

Fig. 2 is a cross-section on lines A-B of Fig. 1.

Fig. 3 shows a modified iorm partly in longitudinal cross-section.

Fig. 4 shows a modified form partly in longitudinal cross-section.

Fig. 5 shows a modified form partly in longitudinal cross-section.

Fig. 6 is a plan end view on the device of Fig. 5.

Fig. 7 shows a modified form partly in longitudinal cross-section.

Figs. 8 and 9 show a modified form partly in longitudinal cross-section.

In Figs. 1 and 2 a threaded projection b is arranged somewhat inclined to the longitudinal axis of the body a of the bottle. A capillary tube 0 extends from this projection parallel to its axis which tube on account of its capillarity sucks up the liquid out of the bottle. Through the opening 11 arranged in the projection b next to the end of the tube 0 air may enter into the bottle for replacing the liquid. The bottle is closed by screwing on the screw cap e shown in dotted lines in Fig. l and which may be made of pressed material or the like. This cap e rests on a flange 9 provided on the threaded projection the tightening being secured by the intermediate packing f. In the horizontal position illustrated in Fig. 1 and 10 the cap being removed, the fluid drops out of the bottle. The diameter of the tube c and the size of the air feeding opening it are to correspond to the special requirements, for instance to the viscosity of the liquid.

The tube c is slotted and the air feeding opening it connects directly to the tube. This modification has the advantage that the whole bottle including the tube can be pressed or moulded from onepiece. The oblique arrangement oi. the threaded socket and of the tube facilitates the proper use of the bottle as the bottle can drop only if the tube is downwardly directed. In the form of construction shown in'Fig. 3 a illustrates the body of the bottle, b a projection inclined to the longitudinal axis of the bottle hearing the tube. 0 which is longitudinally slotted. H

Next to-the tube-- is the air opening at through vwhich the air enters during the dropping of the liquid. The tube-ls provided immediatelyin front of the-cross wall of the neck with the screw thread m on which a capn closely surrounding the tubecan be screwed. The cap n is provided on its mouth with a packing 0 which rests against the cross wall of the projection b of the neck of the bottle and which is broad enough to also cover and to close up tightly the air openingd so that no-air can enter the interior of the bottle and no liquid can come into the hollow space between the cap n and the tube 0 while the bottle is locked. The route of the air entering during the dropping to the surface of the liquid has become shorter by the length of the screw threaded socket of the construction shown in Figs. 1 and 2 which is not present in this construction. By this the friction of the air is correspondingly diminished and a more uniform dropping attained.

In the form of construction of Fig. 4 the tube c with its screw cap n and the air opening it is arranged on a threaded connecting piece q which can be screwed upon a screw p of the neck of a bottle p. This connecting piece q carries with its cross wall the dropping device and can consist of glass or pressed material or the like. The

.65 dropping device of this construction can be used with and in connection with every ordinary bottle provided with a suitable thread.

In the form of construction of Fig. 5 the body a of the bottle carries a screw threaded projection b having a funnel like prolongation 9' which is covered by a screw cap e shown in dotted lines. The packing f of the cap 0 tests in the locked position of the cap upon the upper border of the funnel like prolongation thus closely tightening the bottle.

- and r'econducted into the bottle.

The funnel g, as shown in Fig. 6, is filled for about one third with glass the tube cbeing pressed or moulded into this mass of glass. The air feeding opening d is arranged in the bottom of the funnel, respectively in the front face of the screw threaded projection b. The upper border of the funnel 9 projects somewhat over the end of the tube c. This construction makes it impossible that at the end of the use of the bottle the last drop can run along the outer wall of the bottle. 10

In the form of construction of Fig. 7 the funnel g with the tube 0 and the air opening dis mounted on the projection b of the bottle by means oi. an intermediate cap like piece g having a flange engaging witha flange g of the funnel and a 15 thread for being screwed on the threaded projection b. An annular packing g is provided between socket and flange The funnel with the dropping device can be screwed upon any bottle having a corresponding threaded projection; 20 it may be made from glass, pressed or moulded material or the like.

In the form of construction shown in Figs. 8 and 9 a projecting part 0 containing the tube c is arranged on the neck b of the bottle a. The 25 tube 0 as shown in the figures is slotted on its lower side. The air feeding opening dis provided in the projecting part c'below the tube. If the bottle is used it is held with part c pointing downwards this position resulting automatically from 30 the oblique direction 'of the part c. This guaranties the correct position of the slot of the tube and of the air feeding opening. If this type of bottle is so constructed that part 0, lies in the longitudinal axis of the bottle, it will be necessary 35 to provide a marking for the'prope'r position.

- If the bottle is liftedaiter use the final last drop c (Fig. 9)" will be sucked up by the slotted tube Normally the arrangement-of the slot on the lower side of the 40 tube and of the air feeding opening below said tube do not oiler any inconveniece as the sucking power of the capillary tube does not allow any liquid to escape from the air opening or from the longitudinal slot of the tube. 5

It will be understood that various changes in the details of construction may be made without departing from the'spirit or scope of the invention as defined by the appended claims.

I claim: I 5O 1. A drop bottle of the type described including in combination, a body portion, a neck provided with a transverse wall integral therewith and a capillary channel extending integrally from said wall, said wall being provided with an 55 air inlet.

2. A dropbottle of the type described'including in combination, a body portion, a neck, a transverse wall integral with and closing said neck, a rod extending integrally from said wall 60 and having a capillary groove extending longitudinaily for the full length thereof, said wall being'provided with an air inlet and a liquid outlet to said groove.

3. A drop bottle of the type described including in combination, a body portion, a. neck, a transverse wall integral with and closing said neck, a rod extending integrally from said wall and having a deep capillary groove pressed into lower end of said groove.

4. A drop bottle of the type described including in combination, a body portion, a neck, a 75 transverse wall integral with and closing said neck, a capillary channel extending integrally from said wall, said wall being provided with an air inlet. a cap to cover the channel and close 5 air inlet and a screw thread on said channel to receive the cap.

5. A drop bottle 01' the type described including in combination, a. body portion, a neck, a transverse wall integral with and closing said neck, a capillary tube extending integrally from said wall and neck, said transverse wall and tube being inclined with respect to the axis of the bottle body.

6. A drop bottle of the type described including in combination a body portion, a neck. a transverse wall integral with and closing said neck, a rod integral with and extending i'rom said wall at an angle to the axis of the bottle body and having a deep capillary groove pressed into the full length thereof on the side nearest to the bottom of the bottle, and an air inlet through said wall and in communication with said groove whereby it and the groove are beneath the tube when the bottle is in use.

7. A drop bottle according to claim 3 in which the grooved rod and air inlet are inclosed in a cylindrical sleeve formed integral with the transwerse wall and groove rod, the'whole being formed by molding during the forming or the bottle.

EUGEN BOHM.

CERTIFICATE OF CORRECTION Patentllo. 2,089,871

EUGEN 561m August 10,1937.

It is hereby certified that the name of the assignee in the above a numbered patent was erroneously described and specified as "Glashutte Brehmenstally Septinms Bohn Jr. whereas said name shouldhave been described and specified as Glashutte Brehmenstall, Septimus Bohm Jr. of firnstthal-onthe-Rennste'ig, Germany, as shown by the recorder assigmnents inthis office; and that the said Letters Patent should be read with this correction therein that the same may coniorm to the record, of the case in the. Patent office.

Signed and sealed this 16th day of November, A. D. i957.

(Seal) Henry Van Arsdale, Acting Commissioner of Patents.

V CERTIFIQATE OF CORRECTION. I Patent No. 2,089,811. August 10, 9 7

, EUGEN B'c'rm.

It is hereby certified that in Certificate of Correction issued November 16, 19571;! the-above numbered patent, the name of the assignee should read Glashi'itte Brehmenstall, Septimus B5hm Jr. of Ernstthal-on the-Benn eteig, Germany, instead of "Glashutte Brehmenstall; Septimus Bohm Jr.";

and thatthe said Certificate should be read with this correction therein that theT same may conform to the record of the case in the Patent Office. Signed and sealed this 29th day of Fhrch, A. D. 1938.

Henry V'an' Arsdale,

(Seal) Acting Commissioner of Patents.

transverse wall integral with and closing said neck, a capillary channel extending integrally from said wall, said wall being provided with an air inlet. a cap to cover the channel and close 5 air inlet and a screw thread on said channel to receive the cap.

5. A drop bottle 01' the type described including in combination, a. body portion, a neck, a transverse wall integral with and closing said neck, a capillary tube extending integrally from said wall and neck, said transverse wall and tube being inclined with respect to the axis of the bottle body.

6. A drop bottle of the type described including in combination a body portion, a neck. a transverse wall integral with and closing said neck, a rod integral with and extending i'rom said wall at an angle to the axis of the bottle body and having a deep capillary groove pressed into the full length thereof on the side nearest to the bottom of the bottle, and an air inlet through said wall and in communication with said groove whereby it and the groove are beneath the tube when the bottle is in use.

7. A drop bottle according to claim 3 in which the grooved rod and air inlet are inclosed in a cylindrical sleeve formed integral with the transwerse wall and groove rod, the'whole being formed by molding during the forming or the bottle.

EUGEN BOHM.

CERTIFICATE OF CORRECTION Patentllo. 2,089,871

EUGEN 561m August 10,1937.

It is hereby certified that the name of the assignee in the above a numbered patent was erroneously described and specified as "Glashutte Brehmenstally Septinms Bohn Jr. whereas said name shouldhave been described and specified as Glashutte Brehmenstall, Septimus Bohm Jr. of firnstthal-onthe-Rennste'ig, Germany, as shown by the recorder assigmnents inthis office; and that the said Letters Patent should be read with this correction therein that the same may coniorm to the record, of the case in the. Patent office.

Signed and sealed this 16th day of November, A. D. i957.

(Seal) Henry Van Arsdale, Acting Commissioner of Patents.

V CERTIFIQATE OF CORRECTION. I Patent No. 2,089,811. August 10, 9 7

, EUGEN B'c'rm.

It is hereby certified that in Certificate of Correction issued November 16, 19571;! the-above numbered patent, the name of the assignee should read Glashi'itte Brehmenstall, Septimus B5hm Jr. of Ernstthal-on the-Benn eteig, Germany, instead of "Glashutte Brehmenstall; Septimus Bohm Jr.";

and thatthe said Certificate should be read with this correction therein that theT same may conform to the record of the case in the Patent Office. Signed and sealed this 29th day of Fhrch, A. D. 1938.

Henry V'an' Arsdale,

(Seal) Acting Commissioner of Patents. 

